In an environment of changing commodity prices, complex socio-environmental dynamics, and increasing interest in sustainability, oil, gas and mining (OGM) companies are striving to identify better, more responsible business practices that also contribute to a healthy bottom line. A growing body of evidence demonstrates that gender equity is a key determinant for firm performance. Gaining input from both men and women in host communities is critical to securing a company’s social license and in helping OGM companies operate responsibly. Increasingly, OGM companies are recognizing that equitable participation from men and women—as managers, employees, suppliers, and partners in community growth—will play a key role in realizing their goals for sustainable, responsible, and profitable business. Institutional investors and multilateral banks have also started to recognize gender as a factor in their investment decisions. Working equitably with men and women—within the company, as suppliers, and in host communities makes strong business sense. This toolkit presents detailed, step-by-step guidance for companies to work towards this goal in each of these areas. The toolkit is a modular, customizable guide that includes four tool suites focused on different issues: increasing gender diversity from the workforce to the boardroom; women-owned businesses and the supply chain; women and community engagement; and addressing gender-based violence in the workforce.